package com.jjiang.bbmall.ware.config;

import org.springframework.amqp.core.Binding;
import org.springframework.amqp.core.Exchange;
import org.springframework.amqp.core.Queue;
import org.springframework.amqp.core.TopicExchange;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;

import java.util.HashMap;
import java.util.Map;

@Configuration
public class MyRabbitConfig {

    RabbitTemplate rabbitTemplate;

    @Primary
    @Bean
    public RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory) {
        RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);
        rabbitTemplate.setMessageConverter(messageConverter());
        this.rabbitTemplate = rabbitTemplate;
        return rabbitTemplate;
    }

    /**
     * 序列化机制使用JSON
     *
     * @return
     */
    @Bean
    public MessageConverter messageConverter() {
        return new Jackson2JsonMessageConverter();
    }

    @Bean
    public Exchange stockEvent() {
        return new TopicExchange("stock-event-exchange", true, false);
    }

    @Bean
    public Queue stockReleaseStockQueue() {
        return new Queue("stock.release.stock.queue", true, false, false);
    }

    @Bean
    public Queue stockDelayQueue() {
        Map<String, Object> args = new HashMap<>();
        args.put("x-dead-letter-exchange", "stock-event-exchange");
        args.put("x-dead-letter-routing-key", "stock.release");
        // 先准备2分钟
        args.put("x-message-ttl", 20000);
        return new Queue("stock.delay.queue", true, false, false, args);
    }

    @Bean
    public Binding stockReleaseBinding() {
        return new Binding("stock.release.stock.queue", Binding.DestinationType.QUEUE, "stock-event-exchange", "stock.release.#", null);
    }

    @Bean
    public Binding stockLockedBinding() {
        return new Binding("stock.delay.queue", Binding.DestinationType.QUEUE, "stock-event-exchange", "stock.locked", null);
    }
}
